<?php

/**
 * @file
 * Field conversion for fields handled by this module.
 */

/**
 * Implementation of hook_views_convert().
 *
 * Intervene to convert field values from the Views 1 format to the
 * Views 2 format. Intervene only if $view->add_item() won't produce
 * the right results, usually needed to set field options or values.
 */
function taxonomy_views_convert($display, $type, &$view, $field, $id = NULL) {
    switch ($type) {
        case 'field':
            $matches = array();
            if (preg_match('/term_node(_(\d+))?/', $field['tablename'], $matches)) {
                switch ($field['field']) {
                    case 'name':
                        $item = $view->get_item($display, 'field', $id);
                        $item['table'] = 'term_node';
                        $item['field'] = 'tid';
                        if ($field['options'] != 'nolink') {
                            $item['link_to_taxonomy'] = TRUE;
                        }
                        if (!empty($field['vocabulary'])) {
                            $item['limit'] = TRUE;
                            $item['vids'] = array($field['vocabulary']);
                        }
                        // The vocabulary ID might be embedded in the table name.
                        elseif (!empty($matches[2])) {
                            $item['limit'] = TRUE;
                            $item['vids'] = array($matches[2]);
                        }
                        $view->set_item($display, 'field', $id, $item);
                        break;
                }
            } elseif ($field['tablename'] == 'term_data') {
                switch ($field['field']) {
                    case 'name':
                        if ($field['field'] == 'views_handler_field_tid_link') {
                            $view->set_item_option($display, 'field', $id, 'link_to_taxonomy', TRUE);
                        }
                        break;
                }
            }
            break;
        case 'filter':
            if ($field['tablename'] == 'term_node' || !strncmp($field['tablename'], 'term_node_', 10)) {
                switch ($field['field']) {
                    case 'tid':
                        $operators = array('AND' => 'and', 'OR' => 'or', 'NOR' => 'not');
                        $item = $view->get_item($display, 'filter', $id);
                        if ($vid = (integer) substr($field['tablename'], 10)) {
                            $item['table'] = 'term_node';
                            $item['vid'] = $vid;
                        } else {
                            $item['limit'] = FALSE;
                        }
                        $item['operator'] = $operators[$field['operator']];
                        $item['type'] = 'select';
                        $view->set_item($display, 'filter', $id, $item);
                        break;
                }
            } elseif ($field['tablename'] == 'term_data') {
                switch ($field['field']) {
                    case 'vid':
                        $operators = array('AND' => 'in', 'OR' => 'in', 'NOR' => 'not in');
                        $view->set_item_option($display, 'filter', $id, 'operator', $operators[$field['operator']]);
                        break;
                }
            }
            break;
        case 'argument':
            $options = $field['argoptions'];
            switch ($field['type']) {
                case 'taxid':
                    if (!empty($field['options'])) {
                        $options['depth'] = $field['options'];
                    }
                    $options['break_phrase'] = TRUE;
                    $view->add_item($display, 'argument', 'node', 'term_node_tid_depth', $options, $field['id']);
                    break;
                case 'taxletter':
                    if (!empty($field['options'])) {
                        $options['glossary'] = TRUE;
                        $options['limit'] = $field['options'];
                    }
                    $view->add_item($display, 'argument', 'term_data', 'name', $options, $field['id']);
                    break;
                case 'vocid':
                    $view->add_item($display, 'argument', 'vocabulary', 'vid', $options, $field['id']);
                    break;
            }
            break;
    }
}
